5.5 oz /yd² 100% ring spun USA cotton 24 singles Heather Grey is 90/10 ring spun cotton/polyester Other Heathers are 50/50 ring spun cotton/polyester Reactive dyed for longer lasting color Pre washed to minimize shrinkage Ribbed crewneck collar Taped neck and shoulders Double needle stitching on bottom hem Ribbed cuffs Tear away label USMCA certified div span style text decoration underline strong This product meets the following Sustainable Style subcategories /strong /span /div div br /div div Sustainable Manufacturing This product meets the OEKO TEX Standard 100 /div div br /div div Socially Conscious Manufacturing This product was made in a facility that holds a SMETA audit certification /div p br /p p br /p